Treated as a subjective junior synonym ofPyrinodia Pomel, 1883, by Vadet (2000). However it is not certain that the specimen on which he based this is really conspecific with the type species of Pyrinodia.

Remarks

Having the periproct still in contact with the posterior ocular plates of the apical disc is a primitive feature and distinguishes Pygopyrina from all other Echinoneioida.